JPH0486112U

JPH0486112U -

Info

Publication number: JPH0486112U
Application number: JP12957590U
Authority: JP
Priority date: 1990-11-30
Filing date: 1990-11-30
Publication date: 1992-07-27

Description

[Brief explanation of drawings]

第１図は本考案の実施例に係るスリツト装置の
第１工程スリツトロールモデルの主要部説明図、
第２図は亀裂発生因子説明グラフ図、第３図ａは
第１従来例になる第１工程スリツトロールの模式
的構成説明図、第３図ｂは第１従来例になる第２
工程スリツトロールの模式的構成説明図、第４図
ａと第４図ｂは第２従来例になるロールスリツト
装置の模式的構成説明図、第５図は半剪断された
圧延板材断面図、第６図は圧延板材の長手方向に
直交する方向の断面図である。１……第１工程スリツトロール、２……圧下ロ
ール、Ｃ１，Ｃ２……回転刃または剪断刃、Ｃｅ
……刃先、Ｃｆ……刃先の凸曲面、ｐ……圧延板
材、Ｒ１……第１工程スリツトロールの上部剪断
ロール、Ｒ２……第１工程スリツトロールの下部
剪断ロール、Ｒ……回転刃または剪断刃の刃先の
凸曲面の曲率。 FIG. 1 is an explanatory diagram of the main parts of a first step slitting roll model of a slitting device according to an embodiment of the present invention;
Fig. 2 is a graph diagram explaining crack generation factors, Fig. 3a is a diagram schematically illustrating the configuration of the first process slit roll which is the first conventional example, and Fig. 3b is the second process which is the first conventional example.
4a and 4b are schematic structural explanatory diagrams of a roll slitting device as a second conventional example; FIG. 5 is a cross-sectional view of a half-sheared rolled plate material; The figure is a sectional view taken in a direction perpendicular to the longitudinal direction of the rolled plate material. 1... First step slit roll, 2... Reduction roll, C1, C2... Rotating blade or shearing blade, Ce
...Blade edge, Cf...Convex curved surface of cutting edge, p...Rolled plate material, R1...Upper shear roll of the first process slit roll, R2...Lower shear roll of the first process slit roll, R...Rotary blade or shear blade The curvature of the convex surface of the cutting edge.

Claims

[Claims for Utility Model Registration] An upper cutting roll having rotary blades in the form of discs at predetermined intervals, and a lower cutting roll having disc-like rotary blades in a wider interval than the interval between the rotary blades of the upper cutting roll. A first step slit roll that half-shears the metal sheet material between the rotary blade of the first step slit roll, and upper and lower rolls that apply reverse shear to the half-sheared metal sheet material to completely shear it on the downstream side of the first step slit roll. In a roll slitting device comprising a second step slitting roll, a convex curved surface having a predetermined curvature larger than the cutting edge of the rotary blade of the lower cutting roll is formed on the cutting edge of the rotating blade of the upper cutting roll of the first step slitting roll. A roll slitting device characterized by: